<template>
  <!-- 公共布局 -->
  <Common  :sidebar="false">
    <div class="hero" :style="{ ...bgImageStyle }">
      <component v-if="bubbles" :is="bubbles" :options="options" ></component>
    </div>
    <div class="tag-wrapper">
      <!-- 标签集合 -->
      <ModuleTransition>
        <TagList
                v-show="recoShowModule"
                class="tags"
                :currentTag="$currentTags.key"
                @getCurrentTag="tagClick"></TagList>
      </ModuleTransition>

      <!-- 博客列表 -->
      <ModuleTransition delay="0.08">
        <note-abstract
                v-show="recoShowModule"
                class="list"
                :data="posts"
                :currentPage="currentPage"
                @currentTag="$currentTags.key"></note-abstract>
      </ModuleTransition>

      <!-- 分页 -->
      <ModuleTransition delay="0.16">
        <pagation
                class="pagation"
                :total="posts.length"
                :currentPage="currentPage"
                @getCurrentPage="getCurrentPage"></pagation>
      </ModuleTransition>
    </div>


  </Common>
</template>

<script>
import Common from '@theme/components/Common'
import NoteAbstract from '@theme/components/NoteAbstract'
import TagList from '@theme/components/TagList'
import pagination from '@theme/mixins/pagination'
import ModuleTransition from '@theme/components/ModuleTransition'
import { sortPostsByStickyAndDate, filterPosts } from '@theme/helpers/postData'
import moduleTransitonMixin from '@theme/mixins/moduleTransiton'

export default {
  mixins: [pagination, moduleTransitonMixin],
  components: { Common, NoteAbstract, TagList, ModuleTransition },

  data () {
    return {
      currentPage: 1,
      currentTag: '全部',
      bubbles:null,
    }
  },

  computed: {
    // 时间降序后的博客列表
    posts () {
      let posts = this.$currentTags.pages
      posts = filterPosts(posts)
      sortPostsByStickyAndDate(posts)
      return posts
    },
    options(){
      return{
        color: 'rgba(225,225,225,0.5)', //Bubble color
        radius: 15, //Bubble radius
        densety: 0.3, // The larger the bubble density, the greater the density (suggest no more than 1).
        clearOffset: 0.2 // The larger the bubble disappears [0-1], the longer it disappears.
      }
    },
    bgImageStyle () {
      let random_bg=Math.floor(Math.random()*19+1)
      const initBgImageStyle = {
        textAlign: 'center',
        overflow: 'hidden',
        background: 'url(/img/'+random_bg+'.jpg) center/cover no-repeat'
      }
      const {
        bgImageStyle
      } = this.$frontmatter

      return bgImageStyle ? { ...initBgImageStyle, ...bgImageStyle } : initBgImageStyle
    },
  },

  mounted () {
    import('vue-canvas-effect/src/components/bubbles').then(module=>{
      this.bubbles=module.default
    }),
    this._setPage(this._getStoragePage())
  },

  methods: {
    // 获取当前tag
    getCurrentTag (tag) {
      this.$emit('currentTag', tag)
    },
    tagClick (tagInfo) {
      if (this.$route.path !== tagInfo.path) {
        this.$router.push({ path: tagInfo.path })
      }
    },
    // 获取当前页码
    getCurrentPage (page) {
      this._setPage(page)
      setTimeout(() => {
        window.scrollTo(0, 0)
      }, 100)
    },
    _setPage (page) {
      this.currentPage = page
      this.$page.currentPage = page
      this._setStoragePage(page)
    }
  },

  watch: {
    $route () {
      this._setPage(this._getStoragePage())
    }
  }
}
</script>

<style src="../styles/theme.styl" lang="stylus"></style>

<style lang="stylus" scoped>
@require '../styles/mode.styl'
.hero {
  position relative
  box-sizing border-box
  padding 0 20px
  height 50vh
  display flex
  align-items center
  justify-content center
  .hero-img {
    max-width: 300px;
    margin: 0 auto 1.5rem
  }

  h1 {
    display: block;
    margin:0 auto 1.8rem;
    font-size: 2.5rem;
  }

  .description {
    margin: 1.8rem auto;
    font-size: 1.6rem;
    line-height: 1.3;
  }
}
.tag-wrapper
  max-width: $contentWidth;
  margin: 0 auto;
  padding: 0rem 2.5rem 0;

@media (max-width: $MQMobile)
  .tag-wrapper
    padding: 4.6rem 1rem 0;
</style>
